题目: 试叙述循环气体中可燃成分和氧含量变化的原因。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0503/0bf310a5a6341fbaa53495e8549c6771.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:选择题 看一看,选一选。( ) 1. A. My name is paper. I'm a student.( ) 2. B. He is my friend. His name is chair. ( ) 3. C. Her name is pencil. She is happy. 查看答案